If at any stage in the days-long process an Oscar does not come out perfectly, the figure is destroyed and a new one started to replace it. But once the statue is finished, it is guaranteed for life, and actors can send damaged figures back to have them replaced or brought back to their original brilliance.
The purpose of the Part Submission Warrant (PSW) is to document the submission and the approval or rejection of purchased parts prior to production. Cooper Industries has developed its own Submission Warrant document and this form is a required element of PPAP.
This is the purpose of the invoice. Upon receipt of the purchase order, the seller will then check if the order can be fulfilled. If it can be delivered, the invoice will then make its way to the buyer. The purchase order is the communication from buyer to seller and the invoice is the answer from seller to buyer.